One-Step Synthesis and Self-Assembly of Metal Oxide Nanoparticles into 3D Superlattices
authors Pucci, A; Willinger, MG; Liu, F; Zeng, XB; Rebuttini, V; Clavel, G; Bai, X; Ungar, G; Pinna, N
nationality International
journal ACS NANO
author keywords zirconium oxide; nanoparticles; supercrystals; mesocrystals; assembly; electron microscopy
keywords ZIRCONIA NANOCRYSTALS; LAMELLAR NANOHYBRIDS; SCALE SYNTHESIS; NANOSTRUCTURES; DNA; ORGANIZATION
abstract A simple one-pot approach based on the "benzyl alcohol route" is introduced for the fabrication of highly ordered supercrystals composed of highly uniform 3-4 nm zirconia and rare-earth stabilized zirconia nanoparticles. The as-fabricated supercrystals reach sizes larger than 10 mu m and present well-defined 3D morphologies such as flower-like, rhombic dodecahedron, and bipyramids. This system is unique In that the supercrystals are formed in one-step directly in the reaction medium where the nanoparticles are synthesized. The uniformity in nanocrystal shape and size is attributed to the in situ formation of benzoate species that directs the nanoparticle growth and assembly. The low colloidal stabilization of the benzoate-capped nanoparticles in benzyl alcohol promotes the formation of supercrystals in solution by pi-pi interaction between the in situ formed benzoate ligands attached to neighboring particles. By varying the reaction temperature and the nature of the doping the way the nanobulding blocks assemble in the supercrystals could be controlled. Standard FCC superlattice packings were found together with more unusual ones with P6/mmm and R (3) over barm symmetries.
publisher AMER CHEMICAL SOC
issn 1936-0851
year published 2012
volume 6
issue 5
beginning page 4382
ending page 4391
digital object identifier (doi) 10.1021/nn3010735
web of science category Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000304231700081
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 13.709
5 year journal impact factor 14.820
category normalized journal impact factor percentile 95.274
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg